If 7 times a certain number is added to 12, the result is 47

Answers

Answer 1
So first we want to assign the certain number a variable, let's say x.

So we can write this out as an equation, or:

7x + 12 = 47

Now we can just solve this.

7x + 12 - 12 = 47 - 12

7x = 35

/7     /7

x = 5

So the certain number is 5.
Answer 2
5 beacause 5 times 7 is 35 and 35 plus 12 is 47.

Related Questions

A sixth-grade class has 12 boys and 24 girls.

Write two more statements comparing the number of boys in the class to the number of girls

Answers

for every two girls there is on boy

There are 12 more girls than boys

HELP! SIMPLIFY!

simplify:

1) (m³ n⁵) (mn⁴)
------------------
m⁻³ n²


2) 6a² b³
-----------
4a


3) 5⁶ a⁶ b³
-----------
5² ab³

Answers

1)  (m³n⁵)(mn⁴)
     -----------------
      m⁻³n²

Simplify.

m⁴n⁹
-------
m⁻³n²

When the bottom power is a negative, you add it to the power on top, & when the power is a positive, you subtract it.

m⁴ + m³ = m⁷

n⁹ - n² = n⁷

So, our answer for #1 is m⁷n⁷

2)  6a²b³
     ---------
        4a

Please read rules in #1.

6 / 4 = 3/2 & a² - a = a

So, our answer is 3a
                               -----
                                 2

3)  5⁶a⁶b³
     ---------
       5²ab³
5⁶ - 5² = 5⁴ AND a⁶ - a = a⁵ AND b³-b³ = 0

So, our answer is 5⁴a⁵

Simplify 5⁴

5 × 5 × 5 × 5 = 625

So, our final answer is :

625a⁵

~Hope I helped!~

Simplify the fraction

what is 16 over 38

Answers

8/19 is the answer for your question
16/38

both numbers can be divided by 2.

16/2 / 38/2

8/19

the numbers cannot be simplified any further, so 8/19 is your final answer. Hope this helps!


The average (A) of two number,M and N, is given by the formula A=m+n/2. Find the average of the two numbers 36 and 72.

Answers

Answer: 54

Step-by-step explanation:

Average = Total/ total number

Average= 36 +72/2

             = 108/2

             = 54

54 is the  average of the two numbers 36 and 72.

What is Statistics?

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

We need to find the average of the two numbers 36 and 72.

The average (A) of two number, M and N, is given by the formula A=m+n/2

Let m = 36

n=72

Now to find the average of two numbers we have to plug in these values in the formula

A=36+72/2

=108/2

=54

Hence, 54 is the  average of the two numbers 36 and 72.

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Explain how you can tell without calculating whether the sum of a postitive number and a negative number will be positive, negative or zero.

Answers

if the number is perhaps -24 + 25= it would be a positive and because the lowest number is negative and if perhaps the number are -25 + 24 it would be negative because the highest number is negative

what is 4,548 in expanded form ?

Answers

4,000+500+40+8
is the correct answer

What is the limit ? And how do I get the answer?

Answers

There is no limit. No solutions. 

Irst. write an expression for the probability that both socks are bl

Answers

The expression for the probability of both socks, S=bl x2
S=bl x2 is correct answer if you use a calculator you can check my answer for more confirmation

Find the tax on a dinette set with a cash price of $200 that has been reduced by 20% if the tax rate is 6.5%.

Answers

Hi. First, we need to multiply the $200 x 20% which gives us 40. Next, we subtract the 40 from 200 which gives us $160. Lastly, we multiply the $160 x 6.5% which gives us $10.40.

$200 x 20% = 40
$200 - 40 = 160
$160 x 6.5% = $10.40

Total tax = $10.40

Hope this helps.
Take care,
Diana

Given: B = {(4, 2), (4, -2), (16, 4), . . .} Is B a function and why?

Answers

Look at the first elements of these points:  {4, 4, 16, ... }
If any two of these first elements is the same (as 4 equals 4), the relationship B is NOT a function.  Review the definition of function.
Final answer:

Set B = {(4, 2), (4, -2), (16, 4), . . .} is not a function because it has an 'x' value (4) that corresponds to more than one 'y' value (2,-2), which contradicts the definition of a function.

Explanation:

The given set B = {(4, 2), (4, -2), (16, 4), . . .} is not a function. In mathematical terms, for a set of ordered pairs to be considered a function, each input (or 'x' value) must have exactly one output (or 'y' value). However, in B, the input 4 corresponds to two different outputs: 2 and -2. This violates the definition of a function, proving that B is not a function.

It's useful to remember this as a rule: in functions, a particular x-value can only be paired with a single y-value. In contrast, in non-functions, a single x-value can be linked to multiple y-values, as demonstrated by set B.

Learn more about Function Definition here:

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Consider the two conditional statements. Draw a conclusion from the given conditional statements, and write the contrapositive of each conditional statement. Then, draw a conclusion from the two contrapositives. How does the first conclusion relate to the second conclusion?

If you are eating a banana, then you are eating fruit.
If you are eating fruit, then you are eating food.
a.If you are eating a banana, then you are eating food.
If you are not eating a banana, then you are not eating fruit. If you are not eating fruit, then you are not eating food.
If you are not eating a banana, then you are not eating food.
The second conclusion is the contrapositive of the first conclusion.
b.
If you are eating a banana, then you are eating food.
If you are eating fruit, then you are eating a banana. If you are eating food, then you are eating fruit.
If you are eating food, then you are eating a banana.
The second conclusion is the contrapositive of the first conclusion.
c.If you are eating a banana, then you are eating food.
If you are not eating fruit, then you are not eating a banana. If you are not eating food, then you are not eating fruit.
If you are not eating food, then you are not eating a banana.
The second conclusion is the contrapositive of the first conclusion.
d.If you are eating food, then you are eating a banana.
If you are not eating fruit, then you are not eating a banana. If you are not eating food, then you are not eating fruit.
If you are not eating food, then you are not eating a banana.
The second conclusion is the contrapositive of the first conclusion.

Answers

the correct answer is C

Answer:

c is the answer

Step-by-step explan ation:

In a cross-country race with 35 participants , the mean finish time was 21 minutes . Which statement must be true?
A-the most common finish time was 21 minutes
B-at least one participant finished in exactly 21 minutes.
C-over half of the participants finished in less than 21 minutes.
D-if no participants finished in less than 21 minute, than everyone finished in exactly 21 minutes

Answers

The answer is c, all others can be ruled out.

You are going to bake an over-sized sheet cake. The recipe calls for 2 cups of sugar for every 3 cups of flour. How many cups of flour are needed if you use 18 cups of sugar?

Answers

u will set up a ratio
2cups/ 3 cups = 18 cups/ X
X=27 Cups

Answer:27

Step-by-step explanation:

HELPPPPP PLEASEEEEEE

Answers

f(x) = 4^x

so when store sells 64
4^x = 64
4^x = 4^3
    x = 3

answer
B. Month 3
Month 3. When you replace x with 3 to make it 4^3, it means 4*4*4, and u get 64.

Sammy has a 10-foot ladder, which he needs to climb to reach the roof of his house. the roof is 12 feet above the ground. the base of the ladder must be at least 1.5 feet from the base of the house. how far is it from the top of the ladder to the edge of the roof? draw a sketch.

Answers

Using the Pythagorean theorum we can solve this v a^2+b^2= c^2. A is the distance from base of house to ladder A= 1.5, c ifls length of ladder, c= 10. (1.5)^2 + ;b^2 = (10)^2. Solve for b. B= 9.88. 12 foot height of house - 9.88 feet to top of angled ladder = 2.11 from top of ladder to edge of roof

use prime factorization to find gcf of 57 and 27

Answers

gcf (57,27) = 57×27/lcm(57,27)=1539/513 = 3

Sara has 16 red flowers and 24 yellow flowers. She wants to make a bouquet with the same number of each color flowers in each bouquet. How many red flowers will be in each bouquet.

Answers

Sara can make 8 bouquets, with 3 yellow flowers and 2 red ones in each bouquet. How pretty !

How to find the sum of the squares of the roots of an equation?

Answers

Could you possibly find and share more of the context in which you found this problem?

If a and b are roots of a given equation, then "the sum of the squares of the roots of the equation" would be a^2 + b^2.


Final answer:

To calculate the sum of the squares of the roots of a quadratic equation, apply Vieta's formulas to find the sum and product of the roots and use them in the identity (α + β)² - 2αβ to avoid directly solving for the roots.

Explanation:

To find the sum of the squares of the roots of an equation, especially for a quadratic equation of the form ax²+bx+c=0, we use the relationship between the coefficients and the roots provided by Vieta's formulas.

The sum of the roots, denoted as α and β, is given by -b/a, and the product of the roots is c/a. To find the sum of the squares of the roots (α² + β²), you can use the identity (α + β)² = α² + 2αβ + β², or α² + β² = (α + β)² - 2αβ.

By substituting the sum and product of the roots from Vieta's formulas, you can calculate the sum of the squares without actually solving for the roots. This approach is especially useful in equilibrium problems or other situations where you might encounter square roots or higher powers and wish to simplify calculations.

On traditional maps, Earth is represented in a flat plane, or by Euclidean geometry. However, a globe is a more accurate model that comes from elliptical geometry. How does a globe represent the fact that there are no parallel lines in elliptical geometry? The equator is not parallel to any other latitudinal lines. The North and South Poles are never connected by a geodesic. The geodesics connecting the North and South Poles never intersect. The geodesics connecting the North and South Poles intersect at both of the Poles.

Answers

Answer:

D. The geodesics connecting the North and South Poles intersect at both of the Poles

Step-by-step explanation:

Answer:

D) The geodesics connecting the North and South Poles intersect at both of the Poles.

Step-by-step explanation:

got it right on edge 2021 :)

In this ordered pair (4,-5) which number is the ordinate

Answers

The ordinate, or the y-coordinate would be 4 because it comes first in the coordinate pair. In shorter terms, your answer is 4.

Hope this helped! :) Please mark Brainliest and rate!

In the ordered pair (4, -5), the number -5 is the ordinate, which represents the vertical position of a point in a coordinate system.

In the ordered pair (4,-5), the number -5 is the ordinate. In a coordinate system, ordered pairs are used to define locations with two values: the x-coordinate and the y-coordinate. The first number in the pair represents the x-coordinate, which is the horizontal position, and the second number represents the y-coordinate, which is the vertical position, also known as the ordinate.

In this context, the ordinate is the position relative to the horizontal axis in a two-dimensional space. It indicates how far up or down a point lies from the horizontal (x) axis. Hence, in the ordered pair (4, -5), -5 is the ordinate. If a point is above the x-axis, its ordinate is positive; if it's below, as in this case, it's negative.

HELP ASAP!

1. Let f(p) be the average number of days a house stays on the market before being sold for price p in $1,000s. Which statement best describes the meaning of f(250)?

The house sold for $250,000.
The house stayed on the market for an average of 250 days before being sold.
This is the average number of days the house stayed on the market before being sold for $250,000.
The house sold on the market for $250,000 and stayed on the market for an average of 250 days before being sold.

2. Laura rents a movie for a flat fee of $2.00 plus an additional $0.50 for each night she keeps the movie. Choose the cost function that represents this scenario if x equals the number of nights Laura has the movie.

c(x) = 2.00x + 0.50
c(x) = 2.00 + 0.50x
c(x) = 2.50x
c(x) = (2.00 + 0.50)x

Answers

1. f(250)= ??? (the average number of days a house stayed on the market before being sold for $250,000.)
p=price=$250,000
 For #1. I could see both 
- The house sold for $250,000. 
and 

(f(250) is the average number of days the house stayed on the market before being sold for $250,000. ( I would guess this one BEST describes it though)

2. let x= number of nights with the movie

$2.00 is a one time charge. So, it will not have a variable next to it in the expression. 

c(x)=2.00 +0.05x


Answer:c(x)=2.00 +0.05x


Step-by-step explanation:


−3/4(x+2)=6 solve for x

Answers

I believe the correct answer is x=-10
-3/4*(x+2) = 6 /multiply both sides by (-4/3)
-4/3*(-3/4)*(x+2) = 6*(-4/3)  /-4/3*(-3/4) = 1
x+2 = -24/3  /-24/3 = -8
x+2 =-8  /subtract 2 from both sides
x = -8-2
x = -10

In the diagram shown below, ∠K=18º and ∠H=18º.


Prove KJ=13.75. Justify your steps in a paragraph proof.

Answers

(See the attached graphic)
Since all 3 angles of each triangle are equal, the triangles are similar.

Since the triangles are similar, all 3 sides must be in the same proportion.

8 / 5 = 22 / KJ

(5 * 22) / 8 = KJ

KJ = 13.75

In triangle FGH, ∠G = 112,  ∠ H = 18 (GIVEN) , then ∠ F= 180-(112+18) = 50°
In triangle KIJ, ∠ K=18° (GIVEN), ∠J=112° , then ∠ I = 180-(112+18) = 50°

Since Δ FGH & Δ KJI have all their respective angles EQUAL, then these 

2 triangles are SIMILAR and all their respective sides are proportional.
If so we can write the following proportions:
GF/JI = GH/JK
8/5 = 22/JK. Cross multiplication → 8.JK = (5).(22)  → 8.JK = 110
And JK = 110/8 → JK = 13.75 (JK or KJ are the same)

Which distance is longer? 1 mile 1000 meters 10000 centimeters?

Answers

1 mile is the longest. 1000 meters is one km. And 10000 centimeters is 1000 meters or 1 km

You and your friend get the same magazine. You spend $15 for twelve issues. Your friend pays $1.50 per issue but gets the first two issues free. How many issues will your friend get if he also spends $15?

Answers

(1.5 / 15) + 2  = 12 
you add two because he gets two for free 
dived 1.5 by 15 because that will give you how many magazines you can get for $15 

If a radical is multiplied by a number or variable, you should put the number or variable _____ the radical sign.

Answers

Before---------->Apex

Final answer:

Numbers or variables are placed outside of the radical sign when multiplied by a radical. This representation indicates that the entire radical, not just the number inside, is to be multiplied by that number or variable.

Explanation:

If a radical is multiplied by a number or variable, you should put the number or variable outside the radical sign. In mathematics, multiplication or division by the same number on both sides of an equation does not change the equality. When you multiply a radical by a number or variable, you are essentially multiplying the contents inside the square root by that number or variable, but outside of the radical sign to maintain proper order of operations.

When writing an expression involving radicals mathematically, numbers or variables outside the radical do not directly interact with the values inside until simplification or further operations are performed. For example, if you're multiplying 3 by √2, you would write it as 3√2, not √(3×2). The multiplication of the coefficient (the number in front of the radical) applies to the entire radical, not just the number inside it.

Determine the interval on which f(x) = the square root of the quantity of x plus 2 is integrable.

(−∞, 2)
[−2, ∞)
(−∞,−2) U (−2, ∞)
All reals

Answers

Answer:

The interval on which f(x) is integrable is:

                             [-2, ∞)

Step-by-step explanation:

We are given a function f(x) as:

               [tex]f(x)=\sqrt{x+2}[/tex]

We know that a function is integrable over a given interval if it is continuous over a given interval.

Now, we know that the square root function is well defined if the function under the square root sign is positive.

This means here the function is well defined if:

[tex]x+2\geq 0[/tex]

i.e.

[tex]x\geq -2[/tex]

Also, the square root function is continuous over it's domain.

and hence it is integrable over it's domain.

This means that the function is integrable over:

                       [-2,∞)


Which of the following is true for the relation f(x) = 5x + 1?


Only the inverse is a function.


Only the equation is a function.


Neither the equation nor its inverse is a function.


Both the equation and its inverse are functions.

Answers

I think both of them are function if you draw them you will find out that and always the polynomials first degree is functions.

Answer:

Both the equation and its inverse are functions.

Step-by-step explanation:

A function is relation in which one input gives one and only one output.

Here, the given function,

[tex]f(x)=5x+1[/tex]

Which is a polynomial,

A polynomial is a function because for each input value it gives only one output value.

f(x) is a function.

Now, For finding the inverse of f(x),

Replace f(x) by y,

y = 5x + 1

Switch x and y,

x = 5y + 1

Isolate y on the left side,

-5y = 1 - x

[tex]y = \frac{1-x}{-5}=\frac{x-1}{5}[/tex]

Replace y by [tex]f^{-1}(x)[/tex],

[tex]f^{-1}(x)=\frac{x-1}{5}[/tex]

Which is also a polynomial,

Hence, the inverse of f(x) is also a function,

Last option is correct.

The slope of the line passing through the points (0,0) and (2,3) is

Answers

Slope Formula: (y2-y1)/(x2-x1)
0= x1, 0= y1
2= x2, 3= y2
(3-0)/(2-0)
3/2 is the slope

a cylinder. With a diameter of 6cm and a height of 10cm. Can you help me work out the volume of this cylinder to 1 decimal place please?

Answers

Greetings!

The formula for the area of a cylinder is:[tex] \pi r^2h[/tex]

Input the information we already know:
[tex] \pi (6/2)^2*10[/tex]

Simplify the expression. Follow PEDMAS.
[tex] =\pi (6/2)^2*10[/tex]
[tex] =\pi (3)^2*10[/tex]
[tex] =\pi (9)*10[/tex]
[tex]=28.2743339*10[/tex]
[tex]=282.743339[/tex]
Round to the tenth decimal place:
[tex]=282.7[/tex]

The area of the cylinder is 282.7 cm³.

Hope this helps.
-Benjamin


Final answer:

The volume of a cylinder with a diameter of 6 cm and a height of 10 cm is 282.8 cm³, calculated using the formula V = πr²h and rounding to one decimal place.

Explanation:

To calculate the volume of a cylinder, we use the formula V = πr²h where V is the volume, r is the radius of the base, and h is the height of the cylinder. In this case, we have a cylinder with a diameter of 6 cm, which means the radius r is half of that, or 3 cm. The height h is 10 cm. So, the volume is calculated by:

V = π × (3 cm)² × 10 cm

Substituting 3.142 for π, we get:

V = 3.142 × 9 cm² × 10 cm

V = 3.142 × 90 cm³

V = 282.78 cm³

Therefore, the volume of the cylinder rounded to one decimal place is 282.8 cm³.

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